Pneumatic mattress, cushion, &amp;c.



PATENTE? APR, 17, 1906.

R. A. WHALL, PNEUMATIO MATTRESS GUSHON, 8m.

APPLICATION vPLED INDX/'22,1905

.salir ro M raoroarritn Aint Massaonoslrr ff, s Sull "lil erhaltene. Weltall, or manine, nassftcnosa'rrs. itss'tonoa or ont; ooons ela-allaient; raarreeee enteraron. ete.

tra. eraser.

.Epecificatoniof Letters Patent.

' Patented April Il?, 1906.

application filed J\lly Z2, 1905. Serial Nv. 270,832.

lle it ltnown that l, Rionegro A. WIL-ML, a

. resident ol lteeding,.ln the County of Mid- .dlesex and State ol lllassaehusetts have invented certain new and useful lmpxovenient in Pneumatic Mattresses, 'Uushionsu e., ol which the follotiner is a specilieation.

This invention has for its objet-t to provide anair-holding bag ada )ted for use as a pneuinatic mattress or eus non in which the.side

pieces formingr the'toil and bottom shall be lirnily connected against'undue displacement saine parts in both ofthe Jligures.

ln thedrawings, ha represent the top and bottom pieces ofertan-holding bag, the same bci-ng suitably connected aty their. edges by. means suclrasra marginal Strip For inv any ct-hersuitable manner.

c c represent staystrips of suitably llexiblf.x an'd'practlcally inexpensive material7 stout Written textile fabric in the form -o'f webbing being preferred. The edge. portions ot .thiestrips are bent to forni lflanges c f,u'l1it:h 'ere placed in Contact with, the inner surface ol: the

pieces (l o and are united to the latter by rows of stitches il, extendingr through the llanges 'strips t" and through'the )let-es a.' The stay-strips e are elongated and extend ncarlythe entire length or width ol'the bag, provision beiner made for the passage oll air from 'side to side of each stay-stripl 'to insure uniformity oll pressure throughout the entire all.l lace. '.lo this end the stay-strips may be ma e shorter than the length ol' the airlspace, so that airpassages `will be l'ormedat theirends.

The top and bot toni pieces a a are suitably frictionetlf-fthat is, treated with lmvulcanN iaed rubber-'before the parts of the mattressA l are assembled, and the conneetinU-stripb 1s nrelerably similarly treated. 'lflrestay-v forcing-strips at thesenic-tlme preventlr j any liability ol' tearing or rnpturmg the top 8of a t do not require trletloulng material, and

h'ictional material onthe said pieces is uni/ulcanized. f

e -e represent llexlblereint'or(fing-strips oli Q lrlctioned material, preferably textile fabric,

they are'stitehed'to thepieces tra, while the 55 which are placed upon the outer surfaces of (ad the top andbottoni. pieces a a in position to cover the ro'wsol' stitches d, the width of the. said reinforclnfrlstripsbeing `such that they eitend a..considerahle distanee ineaeh direction from the rows of stitches. tiaied inne snrlaeeo `the stri-ps e. is placed 1n Contact with the l'rietioned outer surface of the tooand bottom pieces fr o. L being assembled as above indicated, the

structurels subjected to heatin avulcanlzing- 7 o oven to Vulcania@ 'the li'ietionlnicr material on 4the'respective parts, and tln'ls lirmly unite the same along their cor'itacting surlaees. lt Will lie-seen that the vuleanizationol' the relnf-.

forcing-strips e tothe top and bottom pieces "75 (L ofeloses the nilnuteorilices around the stitches, tllusjvreventmg the eseapo ol` an' where'the stitches are termed, the said rein and bottom pieces along'the lines where they are .perforated by the stitches, so that thereP is no liability of damage 'to tho top and bottom pieces by internal air-pressure.

lt will l e seen that the structure above de? scribed is composed entirely ol" llexible and.

yieldingparts 'of sheet material, there-being nothing to cause uncomfortably hard places ornprot u berances. l

l clavar-1 An air-holding bag adapted `for use as a l pneumatic mattress orcushion, and lia-ving pieces ol the bag and are united to said side- The parts i f stay-strips 'which extendbetween 'the side' -pieces by rows ol'` stitches passing through 95* the side pieces., and air-prooi" reinforcingr` strips applied tothe outer surlacesol the side pieces azul/covering the stitches, said strips being united to the side pieces by yulcanizaf tion and not only preven'ting'the escape ol: air Vro around the stitches, but also the rupturiner of the side -pieees along?r the rows of stitches.

ln testimony whereofl have allixed my signature in presence of ltwowltnesses,

RlCllAliD A. WllAllli. Witnesses: 'I

C. LF. BROWN, E. 'BA'rculaLnEa 

